Chapter 12 TEST Review

What is shown at "A" in this diagram of a nucleotide?

• Sugar
• Phosphate
• Nitrogenous Base
• Hydrogen

What is shown at "B" in this diagram of a nucleotide?

• Sugar
• Phosphate
• Nitrogenous Base
• Hydrogen

What is shown at "C" in this diagram of a nucleotide?

• Sugar
• Phosphate
• Nitrogenous Base
• Hydrogen

Which scientists discovered the double helix model of DNA?

• Chargaff and Levene
• Franklin and Wilkins
• Hershey and Chase
• Watson and Crick

Which scientist confirmed that DNA, not protein, is the genetic material?

• Chargaff
• Crick
• Hershey
• Levene

Which scientist discovered that the bacteraa Streptococcus pneumoniae changed its form (the harmless R strain could transform into the disease causing S form)?

• Avery
• Chase
• Griffith
• Watson

A molecule of DNA is made up of 

• amino acids and proteins
• ATP and enzymes
• paired nucleotides
• receptor enzymes

Why is the presence of DNA important for the cellular metabolic activities?

• DNA directs the production of enzymes
• DNA is the structural component of cell membranes
• DNA directly increases the solubility of nutrients
• DNA is the major component of cytoplasm

Tags

NGSS.HS-LS1-1

Which base always pairs with guanine?

• adenine
• cytosine
• thymine
• uracil

Which defines a codon in DNA and mRNA?

• pair of nucleic acid and sugar
• pair of phosphate and sugar
• three-base code
• two-base code